CVE-2026-89059

What it is

A flaw was found in RESTEasy's IIOImageProvider, which decodes attacker-supplied image request bodies without enforcing any limit on the declared image dimensions or pixel count. A remote, unauthenticated attacker can send a small crafted image declaring enormous dimensions to trigger a very large memory allocation, exhausting the JVM heap and resulting in a denial of service.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of service disruption.

Exploit odds

1.0% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-09-18 08:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-11-06 01:18 UTC Last updatedMost recent change to the record

Details

Published

2026-09-18 08:17 UTC

Last modified

2026-11-06 01:18 UTC

Exploit probability

1.0% · EPSS, next 30 days

Weakness

CWE-409

Record status

Awaiting Analysis

Attack profile CVSS 3.1 · 7.5

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High